he and paul ryan will be watching the election results from boston, massachusetts tonight. the president already cast his ballot in early voting. vice president biden voted today before a home campaign stop in cleveland, and the president plans to play some basketball with friends before a stressful night of waiting for the election results to come in. >>> if you noticed president obama looking a little older than he did four years ago? doctors say it's all part of the job. the stress that comes with being president tends to age people more rapidly, and doctors say that presidents age twice as fast while in office. >> he's going to age. he ages 8 years for every four years he's in office on average. we have studied since teddy roosevelt till now. you notice obama got gray hair? well, that's normal. they will age twice as many years as they're in office. >> according to the doctor one of the main reasons they age so quickly is lack of friends. what? says they have few people they can vent to when things get tough. >>> coming up, you can get a great deal by shopping on-line,